Reporting Issues for Documentation

[anonymous_user_baf07ba4]

Thanks for reporting the issue! I’ve corrected the image reference, and barring any replication issues this should be fixed now.

Thanks again!

[falcon.cali]

**Description: **Confused comparison
**Link: **Clipping | Unreal Engine Documentation
Detail:

[Richard_Hinckley]

@falcon.cali

**Description: **Confused comparison
**Link: **Clipping for UMG Widgets in Unreal Engine | Unreal Engine 5.3 Documentation
Detail:

Looks like image sliders may be broken. There’s a little disconnected slider bar off to the side. I’ll inform the page owner. Thanks!

[anonymous_user_baf07ba4]

Thanks for reporting the issue! I was looking at the page at the same time as Richard, and may have inadvertently fixed the issue :). The slider should be working now!

[LenNerd]

The APK file size limit for the Play Store is incorrect.

Detailed Description of the issue: The APK file size limit is stated to be 50MB for the Play Store , when it is actually 100MB now.

[LenNerd]

Incorrect property name used on the Reduce APK Package Size page.

Engine Version: 4.22

Detailed Description of the issue: The documentation mentions a property in the Package tab called ’ Dynamic Point Lights’, however it has since been renamed to ’ Movable Spotlights / Point Lights’

Links/Screenshots: Optimization Guides for Android in Unreal Engine | Unreal Engine 5.1 Documentation
Screenshot by Lightshot

[RG_k (Robert Gervais)]

@Sly.DW

Hi! A friend of mine was confused by the documentation example about the While Loop on the Flow Control Page. Looking at it I saw that the example for the while is completely wrong. You should update the picture of the graph
is the link, look at the last picture: https://docs.unrealengine.com/en-us/Engine/Blueprints/UserGuide/FlowControl

The doc has been updated to clarify the info about BP While Loop, thanks.

[Alexandre_Marie]

I know that it has already been posted before but Interfaces in Unreal Engine | Unreal Engine 5.1 Documentation doesn’t work and the previous posts had no response from Epic.

As a hotfix, we can still use the former implementation of the 4.11. (A new, community-hosted Unreal Engine Wiki - Announcements - Epic Developer Community Forums)

Engine version: 4.18 to 4.22

Detailed description of the issue: The code simply doesn’t compile. are the errors :

• LogCompile: Error: Blueprint implementable interfaces cannot contain BlueprintCallable functions that are not BlueprintImplementableEvents. Use CannotImplementInterfaceInBlueprint on the interface if you wish to keep this function.

Additional info that is helpful:

• The documentation doesn’t tell you HOW to implement and use the interface in your classes.
• The interface is not obligated to return a bool. And it’s not specified.
• In the code view, the UINTERFACE specifier is (Blueprintable) but in the specifiers’s list it doesn’t appears
• It miss the meta’s key/values available

And that’s it

Best regards,

Alex

PS : It could be also great to grade the documentation or to make some “pull requests” to improve the documentation.

[falcon.cali]

@falcon.cali

Engine Version : 4.21.2
**Description : **Sample Code has Bugs.
**Links : **Networking Overview for Unreal Engine | Unreal Engine 5.3 Documentation
**Detail : **

• In The **Run On Owning Client **section, there are 2 bugs :

• In Step 3, The “Inventory” Variable should not be set to Replicated, becourse it should be edit in a **Event **(e.g, AddItem or RemoveItem)which is called from **server **and run on Owning Client.

• In Step 15 to 19, the Event “AddItem” and “RemoveItem” should write in ThirdPersonCharacter Blueprint, not in the Level Blueprint.

• The Video at the buttom of the page is also wrong, because the **AddItem **and **RemoveItem **event always run on server, and then be **replicated **to clients. It should be called from server, and run on Owning Client.

Hi guys,

Any progress on this?

[anonymous_user_bffad1bc]

Engine version: 4.22

Description: Incorrect Chinese Translation

Details: In link 虚幻引擎游戏性类 | 虚幻引擎5.1文档, it says “因此在 ClassName.h 的顶端不许出现以下行”, meaning the following line shouldn’t appear in ClassName.h. But actually, in English doc, it says “So, at the top of ClassName.h, the following line must appear:”

[uJelleh]

Engine version: 4.22

Issue: Typo on this page Hardware Ray Tracing Tips and Tricks in Unreal Engine | Unreal Engine 5.1 Documentation

• Also, you have to consider that more tracing features are being used, such ■■■ reflections and translucency

[Richard_Hinckley]

@SlothSimon

Engine version: 4.22

Description: Incorrect Chinese Translation

Details: In link 虚幻引擎游戏性类 | 虚幻引擎5.3文档, it says “因此在 ClassName.h 的顶端不许出现以下行”, meaning the following line shouldn’t appear in ClassName.h. But actually, in English doc, it says “So, at the top of ClassName.h, the following line must appear:”

Hey, SlothSimon. I’ve referred this to our localization team, and they’ll review the translation. Thanks!

[scha (scha (inu games))]

Math Expression Node

in the first example some html mixed with the code, look:
<code class=“language-cpp”>(1+x)*sin(myVar)-2.4/rand()</code>

[Screechfx]

Hello guys,
I can’t have access to that tutorial on the documentation.
looking to make a widget virtual keyboard.

2. Widget Blueprint Setup

The page doesn’t exist and clicking on it make me land on the general page.

Thanks for your help guys,

Regards,
Matthieu

[TrueJelly]

**Linking error in “PSO Caching guide”

Engine version**: N/A

Detailed description of the issue: After searching for “PSO” in search bar, and the clicking at the first result “PSO Caching - docs.unrealengine.com” , lands at docs index page, not at the desired page describing PSO caching.

Additional info:
Upon some investigation, it seems that the URL is at fault. That is, Faulty URL returned by the search is “Optimizing Rendering With PSO Caches in Unreal Engine | Unreal Engine 5.1 Documentation” but remove the “-” from between “PSO” and “Caching” (this results in this URL Optimizing Rendering With PSO Caches in Unreal Engine | Unreal Engine 5.1 Documentation) and the proper page loads.

[Zyth23]

Didn’t find better place to repport that, but it seems that the Documentation for BlueprintAPI, on Chrome windows 10, has an error code turning into an infinite loop loading CPU usage. Unreal Engine Blueprint API Reference | Unreal Engine Documentation
All of its children seems to suffer that issue too, I can’t test further cause it hurts my hardware way too much.

[DerHalbDeutscheZ]

I was reading the Introduction to C++ page under the TSet heading (Programming with C++ in Unreal Engine | Unreal Engine 5.3 Documentation) and it states

Remember that currently, the only container class that can be marked as a UPROPERTY is TArray. This means other container classes cannot be replicated, saved, or have their elements garbage collected for you.

However, going through the Action RPG learning resource (https://www.unrealengine.com/marketplace/en-US/slug/action-rpg), I noticed this:

UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category = Inventory)
TMap<URPGItem*, FRPGItemData> InventoryData;

I’m not sure at this point if the code or the documentation is wrong.

[Richard_Hinckley]

@DerHalbDeutscheZ

I was reading the Introduction to C++ page under the TSet heading (https://docs.unrealengine.com/en-US/…ndex.html#tset) and it states

However, going through the Action RPG learning resource (https://www.unrealengine.com/marketplace/en-US/slug/action-rpg), I noticed this:

I’m not sure at this point if the code or the documentation is wrong.

The TArray documentation is out of date - TSet and TMap can now be tagged with UPROPERTY. We’ve made a to fix that. Thanks for pointing it out!

[falcon.cali]

Engine Version : 4.22
**Description : **Incorrect Document for Engine verison 4.22. ( The doc may be for 4.23 )
**Link : **Unreal Game Sync Reference Guide for Unreal Engine | Unreal Engine 5.1 Documentation
**Detail : **

https://.unrealengine.com/core/%5CUsers%5CFALCON~1%5CAppData%5CLocal%5CTemp%5C企业微信截图_15640196678763.png

I think this is for engine** 4.23** , but the document declare it’s for** 4.22**. You can compare the source code between:

• /4.23/Engine/Source/Programs/UnrealGameSync/MetadataServer/Global.asax.cs
• /4.22/Engine/Source/Programs/UnrealGameSync/UnrealGameSyncMetadataServer/Global.asax.cs

Engine 4.23 changed the database from SQLite to MySql, that’s why this config need to be updated for 4.23, but not for 4.22.

[drial5]

Engine Version : 4.22
Description : Incorrect value for Additional Plist Data
Link : https://docs.unrealengine.com/en-US/…art/index.html
Detail :

Under iOS in section 2 ‘Additional Project Configuration’, the value for Additional Plist Data should read : <key>NSCameraUsageDescription</key><string>UE4 needs permission to use the camera in order to use ARKit.</string>